014.01.56.3. What criteria do firewalls typically use to drop, reject, or accept packets, and how do these criteria contribute to the effectiveness of firewalling on routers or individual machines?
The criteria used by firewalls is checkpoints at the points of data transfer just identified. The checkpoints drop, reject, or accept packets based on the following criteria:-
The source or destination IP address or subnet.
The source or destination port.
The firewall's network interface.
Firewalls provide an oppurtunity to work with the subsystem of the Linux kernel that processes IP packets.
Firewalls utilize checkpoints at the points of data transfer, as just identified. These checkpoints determine whether to drop, reject, or accept packets based on the following criteria:
1. The source or destination IP address or subnet.
2. The source or destination port.
3. The firewall's network interface.
These criteria play a crucial role in enhancing the effectiveness of firewalling on routers or individual machines by providing a means to control and secure network traffic. Firewalls offer an opportunity to interact with the subsystem of the Linux kernel responsible for processing IP packets.
